Grinding device



F. LAPE GRINDING DEVICE Original Filed Sept. 27 1922 Patented May 27,1924.

NET 5*;

man

GRINDING DEVICE.

Application filed September 27, 1922, Serial No. 5 0,900; RenewedNovember 2, 1923.

To all whom it may concern:

Be it known that I, FRANK LAPE, a citizen of the United States ofAmerica, and resident.of lVilkes-Barre, in the county of Luzerne andState of Pennsylvania, have in vented certain new and usefulImprovements in Grinding Devices, of which the following is aspecification.

This invention relates to grinding machinery, and particularly to adevice intended for use in dressing the peripheries of friction disks orwheels, the said invention having for an object the provision of novelmeans whereby wheels of the character indicated can be dressed withoutremoving them from their installations; and the said invention is moreparticularly intended for use in connection with friction wheels used intransmissions of automobiles and the like.

It is an object of this invention to provide novel means whereby afriction wheel that is shiftable may, while it is in rotation, be groundto remove any irregularities in its periphery, in order that the saidwheel will run smoothly in association with its coacting member in afriction drive; and the said invention furthermore contemplates theproduction of a device of this kind having adjustable relation to thewheel or its bearings, in order that it may be set to dress the wheel toa predetermined extent.

A further object of this invention is to produce a grinding device ofthe character indicated which can be applied to or removed from theframe structure of automobiles, or other structure in which the frictionwheel is mounted.

IVith the foregoing and other objects in view, the invention consists inthe details of construction, and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings forming part of this application, wherein likecharacters denote corresponding parts in the several views, and in whichFigure 1 illustrates a plan view of a friction drive, associated with aframe intended for use in an automobile;

Figure 2 illustrates an underneath plan view of the grinding tool andits mounting;

Figure 3 illustrates a sectional view through the cross member of theframe,

showing a device embodying the invention, in side elevation; and

Figure 4 is a perspective view of the tool or grinding element.

In these drawings 5 denotes a frame, 6 a cross member thereof, 7 afriction wheel, 8 a friction disk with which the wheel coacts, and 9 awheel shifting mechanism which is conventionally shown and neednot'therefore be described in detail. Any means for shifting the wheelaxially may be employed for moving the said wheel with respect tothegrinding tool, as will presently appear.

The cross member 6 has an aperture 10 for the reception of a fastening11, which may be in the nature of a screw, the said fastening having ashank 12 which extends through a slot 13 of the abrading or grindingtool 14. Av washer 15 is interposed between the head of the screw andthe said tool, for the purpose of binding it and forcing the said toolagainst the cross member, in order that it may be held rigidly while theoperation proceeds.

The nose or working surface of the tool is preferably rounded as shownat 16, and it is intended that through the medium of the slot in thesaid tool, it may be adjusted with relation to the periphery of thewheel 7 in order that it will act on the said wheel and dress it so thatits periphery will be concentric.

After the tool has been set and secured on the cross member, theshifting mechanism may be operated to cause the wheel to pass the toolwhile the said wheel is being rotated and this operation will result, ifthe tool is properly set, in so treating the wheel as to give it a trueworking surface to cause it to properly coact with its companionfriction member.

. The abrading or grinding material of which the tool is made may bevaried to suit particular requirements, but necessarily, it must be ofsome relatively strong material, as will withstand a certain amount ofstrain and have a high efficiency as a grind- I claim: 1. In a devicefor truing friction wheels, the combination with a mounting for a wheel,including means for moving the wheel axially, a cross member stationedin spaced relation thereto and parallel with the axis of the wheel, arelatively straight grinding tool having a slot a member extendingthrough the cross member and into the slot of the grinding tool forholding the grinding tool adjustable with relation to the periphery ofthe wheel and in position at a right angle or oblique with relation tothe axis of the friction wheel.

2. In a device for truing friction Wheels, the combination with amounting for a Wheel, including means for moving the tending through thecross member and L through the slot of the tool for holding the saidtool in different positions of adjustment.

FRANK LAPE.

